markmurray77

Don't forget about the ECU. The computer is different and very difficult to get.

macdaddyslomo

read the faq...also check out corksport.com

SilverPro

Why do so many people here think that adding the intake and exhaust cam will make so much power? Read all the posts regarding this issue and you will find out that the usdm 2.0 will never match the power of the fs-ze becuase our ecu is prohibiting us from power--it is a fact. Does not matter if you throw the high compression pistons in b/c we have no way to adjust our fuel and air maps to take advantage of the potential of the pistons. Read through Traveler's posts and others and you will find out.

For the person wondering between the Spec-V and the MP3 well I too also drove both and there is no doubt the Nissan hauls ***** and will continue to beat the MP3 unless the Mp3 has gone FI. However, no matter how much power the Spec-V had it did not exude the kind of quality that the Mp3 had nor was it as much fun to drive. Get whatever makes you feel good and good luck in your decision.

macdaddyslomo

Well,after talking to corksport and Mazdaspeed they tend to disagree....the guy I talked to Ct corksport was saying if you go with all three on the MP3(keep in mind the MP3's timing and fuel maps are different than the reg 2.0),then you can expect an increase of about 25-35 hp,depending on whether you done any other mods to the car(such as CAI and muffler :0)....any car will get more hp with more aggressive cams...it just tends to make it idle a little rougher...also keep in mind FI is not a good idea with higher compression pistons,so you wont get much more hp out of the engine than this if you stay NA...but its still cheaper than turbo and no worries about detonation!...plus you get a sleeper,even if they pop the hood

SilverPro

There was a guy on the MP3 forum who installed both intake and exhaust cams and had an Injen CAI and he peaked at 123hp I believe. I'll try to find the post. Traveler on this board also installed both cams and has done other things and I think he peaked at around 112hp. Anyway a car making 170hp at the crank should at least be making around 145hp at the wheels. That is just my opinion since I have a bunch of friends with GSR's who baselined around 145-150. Plus all these mods make our engines suck in more air. More air being pumped in means the need for more fuel. So far, in regards to our ECU, we have no way of regulating air or fuel thus we have no way of realizing the maximum gains from either the cams or the pistons. By the way I never said going FI with the high comp pistons were okay because detonation would occur. But with the right fuel and timing you still could.

macdaddyslomo

I tend to disagree about the fuel/air issue...you can run richer by adding a stand alone management system and an extra injector,like a lot of our turbo'd pals here do....not trying to do a he said she said here ,but i was just making a point about turbo and detonation...never said you said otherwise...also how about an adjustable fuel regulator or bigger injectors....i dunno...I believe it can be done so you can smoke a v-spec...besides most of these cars you see on the road are not v-specs,they're just regular se-r's which only boast 140 hp like our MP3 brothers here and I believe the MP3 has more torque than the se-r(non v-spec)...again get off the v-spec's d..all those that sing its praises,go out and buy one...an se-r costs the same or less than an MP3...but slaloming on an autocross track with lots of twisties,i think maybe the nissan would be eating taillights anyway

SilverPro

Your probably right about the adjustable fuel regulator or bigger injectors but don't you think that is overkill for going NA? I think that the new se-r and the spec-vhave the same 2.5l engine but that the regular se-r has 160 and the spec-v has 170 or 175...don't mean to be a magazine racer but I think those are the stats. I am also not for or against the spec-v or any nissan the fact is stock for stock the se-r or spec-v is faster than an mp3 in a straight line. In autocorssing or a roadcoarse it might be different but in the latest grassrootsmotorsport they tested a gti, focus svt, mp3, spec v, and a tiburon and I believe that the spec v was still faster than the mp3 on a road course due to its tighter gearing and limited slip--by the way if you ever read this mag it is a mag for true enthusiasts not just those who are interested in going in a straight line so I tend to believe their numbers and I have seen spec-v's being autocrossed and in the right hands they are fast just like an mp3 can be fast with the right driver.I am not trying to argue with you by the way just giving my opinions

arl240

The new SE-R's have 10 less hp than the spec v and ten less ft-lb's of torque. That brings it to 160 and 165 respectively. And if those Spec v guys start with a 2.5 L so they get a head start in displacement

macdaddyslomo

ok,ok,ok...how bout this then...the Mazdaspeed Protege will smoke them all!!!....and even though its is turbo,its still a fair fight becasue of the diff in displacement.....zoom-zoom

arl240

I have a gut feeling that Mspeed will chew on it (spec v) but they aren't even in the same price category in my books. You pay more for the Mspeed just to get a car that is better in looks, build quality, reliability, sex appeal, performance?, and ..... oh wait, I guess that's everything. Yah, the Mazdaspeed rocks.

SilverPro

Just in case you did not notice I own a Mazda Protege. Yes, the Mazdaspeed Pro should be fast--I hope it is, as I just finished paying off my car last month and plan on getting one only if they make any color other than orange. If not, I'll just wait for the Nissan 350Z or finally get around to replacing the clutch on my porsche 944T (if only I could find a decent mechanic)...zoom zoom zoom

1chance

alight i had to throw my 2 cents in. a nissan spec-v is going to whip the hell out of the mp3. even the se-r i think still rapes it. but in the turns the mp3 will hand the nissan its tires back after they go flying off. that is just it. price it is a different story. i have been offered aroung 18g for a spec-v and the mp3, well i have never been offered, since it is limited and people like it alot thye carry around 21g i have heard. so the nissan is the best bang for the buck.

now no one talk about turbo cars here ok. the turbo protege is going to be fast but in around 24-25g i have heard. and for that price there is the WRX which is the import of all imports, until the evol 8 comes out and then the WRXi (or something like that). so as a stock turbo goes the WRX goes better.

i dont know about cams and **** like that, but if you want to beat imports with an mp3, get an exhguast (cant spell) and intake, then strap on some nos and see what happens.

peace

macdaddyslomo

ahh, the 350Z...now theres a car....I used to own a 280Z and let me tell you..if the financing would go thru I would leave my Pro and never look back....My 280Z would eat an MP3 alive,turns and all, fughetaboutit...alas it was old and the brake system got so bad i dropped it all together...going fast is great..unless you cant stop

1chance

i know the MP3 is an import but the WRX and soon Evo8 eat anything alive...in speed for there price and even cars with higher tags...